Modelling and instrumentation of the storm overflows of the combined sewer system of Sélestat

Abstract

For several years now, combined sewer overflows (CSOs) have been subject to regulations relating to the monitoring of discharge. This paper shows that ultrasound instrumentation of CSOs is both fundamentally possible and practically useful. The contribution of 1D and 3D modelling is necessary to select the location of sensors and to determine the overflow law. Current modelling tools are sufficiently developed to characterize the hydraulic phenomena involved in such storm overflows. Simulation results allow instrumentation to be relevant for both the installation of sensors and the processing of results.

Keywords:

• Self-monitoring
• CSOs
• Instrumentation
• 1D and 3D modelling
• Validation